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In this article, you will find information about the fuses of the Scion iQ (models 2012, 2013, 2014, and 2015), including diagrams of the fuse boxes, a list of fuses, their designation, and the location of the fuse blocks within the vehicle.
Checking and Replacing Fuses in Scion iQ
If any of the electrical components do not operate, a fuse may have blown. If this happens, check and replace the fuses as necessary. Replace it with one of an appropriate amperage rating. The amperage rating can be found on the fuse box lid.
Caution!
- Never use a fuse of a higher amperage rating than indicated, or use any other object in place of a fuse.
- Always use a genuine Scion fuse or equivalent. Never replace a fuse with a wire, even as a temporary fix. This can cause extensive damage or even fire.
- Do not modify the fuse or the fuse box.
Location of Fuse Boxes
Passenger Compartment Fuses:
Engine Compartment Fuses:
Fuse Box Diagrams
2012
Instrument Panel Fuse Box
| № | Fuse | A | Circuit |
|---|---|---|---|
| 1 | ECU-IG NO.1 | 7.5A | Vehicle stability control system, shift lock control system, electric power steering, automatic headlight system, main body ECU, tire pressure warning system |
| 2 | GAUGE | 10A | Electric cooling fan, charging system, emergency flashers, front passenger’s seat belt reminder light, back-up lights, multiport fuel injection system/sequential multi-port fuel injection system, windshield wiper ECU |
| 3 | HTR-IG | 10A | Air conditioning system, rear window defogger |
| 4 | WASHER RR | 10A | Windshield washer |
| 5 | WIPER RR | 10A | Rear window wiper |
| 6 | WIPER FR | 25A | Windshield wipers |
| 7 | WASHER FR | 10A | Windshield washer |
| 8 | OBD | 7.5A | On-board diagnosis system |
| 9 | DOOR NO.2 | 20A | Power windows |
| 10 | D/L NO.1 | 15A | Power door lock system, main body ECU |
| 11 | DOOR NO.1 | 30A | Power windows |
| 12 | CIG | 15A | Power outlet |
| 13 | ACC | 5A | Outside rear view mirrors, audio system, shift lock control system, main body ECU |
| 14 | PANEL NO.1 * | 5A | Meter |
| 15 | TAIL * | 10A | Parking lights, tail lights, license plate lights, multiport fuel injection system/sequential multiport fuel injection system, instrument cluster, windshield wiper ECU |
| 16 | (FOG FR) | 15A | No circuit |
| 17 | AM1 | 7.5A | ACC, starting system |
| 18 | STOP | 10A | Vehicle stability control system, power management ECU, shift lock control system, stop lights, multiport fuel injection system/ sequential multiport fuel injection system |
| 19 | (SEAT-HTR) | 15A | No circuit |
| *: Vehicles with daytime running light system | |||
Engine Compartment Fuse Box №1
| № | Fuse | A | Circuit |
|---|---|---|---|
| 1 | ALT | 120A | Charging system, RDI, ABS NO.1, ABS NO.2, HTR-B, ACC, CIG, GAUGE, ECU-IG NO.1, HTR-IG, WIPER WASHER, AM1, DOOR NO.1, STOP, DOOR NO.2, OBD, FR FOG, DEF, TAIL, EPS, PTC NO.1, PTC NO.2, PTC NO.3, D/L NO.1, PANEL NO.1 |
| 2 | MAIN | 80A | EFI MAIN, EFI NO.1, HORN, AM2 NO.1, DOME, ECU-B NO.2, TURN&HAZ, H-LP MAIN, H-LP MAIN HI, ECU-B NO.1, D/C CUT, ETCS, IG2, IGN, ALT-S |
Engine Compartment Fuse Box №2
| № | Fuse | A | Circuit |
|---|---|---|---|
| 1 | D/C CUT | 30A | ECU-B NO.1, DOME |
| 2 | IMMOBI | 7.5A | Multiport fuel injection system/ sequential multiport fuel injection system |
| 3 | TURN & HAZ | 10A | Turn signal lights, emergency flashers |
| 4 | ETCS | 10A | Electronic throttle control system |
| 5 | ECU-B NO.2 | 5A | Meter, power windows, air conditioning system |
| 6 | H-LP MAIN 1 | 20A | H-LP RH LO, H-LP LH LO |
| 7 | SPARE | 30A | Spare fuse |
| 8 | SPARE | 20A | Spare fuse |
| 9 | SPARE | 5A | Spare fuse |
| 10 | AM2 NO.1 | 30A | Starting system |
| 11 | H-LP MAIN HI 2 | 25A | H-LP RH HI, H-LP LH HI |
| 12 | DOME | 15A | Interior light, audio system |
| 13 | ECU-B NO.1 | 7.5A | Main body ECU, power door lock system |
| 14 | MIR HTR | 7.5A | Outside rear view mirror defoggers |
| 15 | DEFOGGER | 30A | Rear window defogger |
| 16 | EPS | 50A | Electric power steering |
| 17 | RDI | 30A | RDI FAN |
| 18 | ABS NO.1 | 50A | Anti-lock brake system |
| 19 | HTR-B | 40A | HTR, BLR |
| 20 | ABS NO.2 | 30A | Anti-lock brake system |
| 21 | HORN | 10A | Horn |
| 22 | EFI-MAIN | 20A | Multiport fuel injection system/ sequential multiport fuel injection system, EFI NO.1, Fuel pump |
| 23 | ALT-S | 7.5A | Charging system |
| 24 | IGN | 15A | Injection, igniter |
| 25 | IG2 | 10A | SRS airbag system, meter |
| 26 | EFI NO.1 | 10A | Multiport fuel injection system/ sequential multiport fuel injection system |
| *1: Vehicles with daytime running light system *2: Vehicles without daytime running light system | |||
Engine Compartment Fuse Box №3
| № | Fuse | A | Circuit |
|---|---|---|---|
| 1 | PTC NO.1 | 50A | PTC heater |
| 2 | PTC NO.3 | 30A | PTC heater |
| 3 | PTC NO.2 | 30A | PTC heater |
| 4 | H-LP RH HI | 10A | Headlight (high beam) |
| 5 | H-LP LH HI | 10A | Headlight (high beam) |
| 6 | H-LP RH LO * | 10A | Right-hand headlight (low beam) |
| 7 | H-LP LH LO * | 10A | Left-hand headlight (low beam) |
| *: Vehicles with daytime running light system or automatic light off system | |||
2013
Instrument Panel Fuse Box
| № | Fuse | A | Circuit |
|---|---|---|---|
| 1 | ECU-IG N0.1 | 7.5A | Vehicle stability control system, shift lock control system, electric power steering, automatic headlight system, main body ECU, tire pressure warning system |
| 2 | GAUGE | 10A | Electric cooling fan, charging system, emergency flashers, front passenger’s seat belt reminder light, back-up lights, multiport fuel injection system/sequential multi-port fuel injection system, windshield wiper ECU |
| 3 | HTR-IG | 10A | Air conditioning system, rear window defogger |
| 4 | WASHER RR | 10A | Windshield washer |
| 5 | WIPER RR | 10A | Rear window wiper |
| 6 | WIPER FR | 25A | Windshield wipers |
| 7 | WASHER FR | 10A | Windshield washer |
| 8 | OBD | 7.5A | On-board diagnosis system |
| 9 | DOOR NO.2 | 20A | Power windows |
| 10 | D/L NO.1 | 15A | Power door lock system, main body ECU |
| 11 | DOOR NO.1 | 30A | Power windows |
| 12 | CIG | 15A | Power outlet |
| 13 | ACC | 5A | Outside rear view mirrors, audio system, shift lock control system, main body ECU |
| 14 | PANEL NO.1 * | 5A | Meter |
| 15 | TAIL * | 10A | Parking lights, tail lights, license plate lights, multiport fuel injection system/sequential multiport fuel injection system, instrument cluster, windshield wiper ECU |
| 16 | (FOG FR) | 15A | No circuit |
| 17 | AM1 | 7.5A | ACC, starting system |
| 18 | STOP | 10A | Vehicle stability control system, power management ECU, shift lock control system, stop lights, multiport fuel injection system/ sequential multiport fuel injection system |
| 19 | (SEAT-HTR) | 15A | No circuit |
| *: Vehicles with daytime running light system | |||
Engine Compartment Fuse Box №1
| № | Fuse | A | Circuit |
|---|---|---|---|
| 1 | ALT | 120A | Charging system, RDI, ABS NO.1, ABS NO.2, HTR-B, ACC, CIG, GAUGE, ECU-IG NO.1, HTR-IG, WIPER WASHER, AM1, DOOR NO.1, STOP, DOOR NO.2, OBD, FR FOG, DEF, TAIL, EPS, PTC NO.1, PTC NO.2, PTC NO.3, D/L NO.1, PANEL NO.1 |
| 2 | MAIN | 80A | EFI MAIN, EFI NO.1, HORN, AM2 NO.1, DOME, ECU-B NO.2, TURN&HAZ, H-LP MAIN, H-LP MAIN HI, ECU-B NO.1, D/C CUT, ETCS, IG2, IGN, ALT-S |
Engine Compartment Fuse Box №2
| № | Fuse | A | Circuit |
|---|---|---|---|
| 1 | D/C CUT | 30A | ECU-B NO.1, DOME |
| 2 | IMMOBI | 7.5A | Multiport fuel injection system/ sequential multiport fuel injection system |
| 3 | TURN & HAZ | 10A | Turn signal lights, emergency flashers |
| 4 | ETCS | 10A | Electronic throttle control system |
| 5 | ECU-B NO.2 | 5A | Meter, power windows, air conditioning system |
| 6 | H-LP MAIN 1 | 20A | H-LP RH LO, H-LP LH LO |
| 7 | SPARE | 30A | Spare fuse |
| 8 | SPARE | 20A | Spare fuse |
| 9 | SPARE | 5A | Spare fuse |
| 10 | AM2 NO.1 | 30A | Starting system |
| 11 | H-LP MAIN HI 2 | 25A | H-LP RH HI, H-LP LH HI |
| 12 | DOME | 15A | Interior light, audio system |
| 13 | ECU-B NO.1 | 7.5A | Main body ECU, power door lock system |
| 14 | MIR HTR | 7.5A | Outside rear view mirror defoggers |
| 15 | DEFOGGER | 30A | Rear window defogger |
| 16 | EPS | 50A | Electric power steering |
| 17 | RDI | 30A | RDI FAN |
| 18 | ABS NO.1 | 50A | Anti-lock brake system |
| 19 | HTR-B | 40A | HTR, BLR |
| 20 | ABS NO.2 | 30A | Anti-lock brake system |
| 21 | HORN | 10A | Horn |
| 22 | EFI-MAIN | 20A | Multiport fuel injection system/ sequential multiport fuel injection system, EFI NO.1, Fuel pump |
| 23 | ALT-S | 7.5A | Charging system |
| 24 | IGN | 15A | Injection, igniter |
| 25 | IG2 | 10A | SRS airbag system, meter |
| 26 | EFI NO.1 | 10A | Multiport fuel injection system/ sequential multiport fuel injection system |
| *1: Vehicles with daytime running light system *2: Vehicles without daytime running light system | |||
Engine Compartment Fuse Box №3
| № | Fuse | A | Circuit |
|---|---|---|---|
| 1 | PTC NO.1 | 50A | PTC heater |
| 2 | PTC NO.3 | 30A | PTC heater |
| 3 | PTC NO.2 | 30A | PTC heater |
| 4 | H-LP RH HI | 10A | Headlight (high beam) |
| 5 | H-LP LH HI | 10A | Headlight (high beam) |
| 6 | H-LP RH LO * | 10A | Right-hand headlight (low beam) |
| 7 | H-LP LH LO * | 10A | Left-hand headlight (low beam) |
| *: Vehicles with daytime running light system or automatic light off system | |||
2014
Instrument Panel Fuse Box
| № | Fuse | A | Circuit |
|---|---|---|---|
| 1 | ECU-IG N0.1 | 7.5A | Vehicle stability control system, shift lock control system, electric power steering, automatic headlight system, main body ECU, tire pressure warning system |
| 2 | GAUGE | 10A | Electric cooling fan, charging system, emergency flashers, front passenger’s seat belt reminder light, back-up lights, multiport fuel injection system/sequential multi-port fuel injection system, windshield wiper ECU |
| 3 | HTR-IG | 10A | Air conditioning system, rear window defogger |
| 4 | WASHER RR | 10A | Windshield washer |
| 5 | WIPER RR | 10A | Rear window wiper |
| 6 | WIPER FR | 25A | Windshield wipers |
| 7 | WASHER FR | 10A | Windshield washer |
| 8 | OBD | 7.5A | On-board diagnosis system |
| 9 | DOOR NO.2 | 20A | Power windows |
| 10 | D/L NO.1 | 15A | Power door lock system, main body ECU |
| 11 | DOOR NO.1 | 30A | Power windows |
| 12 | CIG | 15A | Power outlet |
| 13 | ACC | 5A | Outside rear view mirrors, audio system, shift lock control system, main body ECU |
| 14 | PANEL NO.1 | 5A | Meter |
| 15 | TAIL | 10A | Parking lights, tail lights, license plate lights, multiport fuel injection system/sequential multiport fuel injection system, instrument cluster, windshield wiper ECU |
| 16 | (FOG FR) | 15A | No circuit |
| 17 | AM1 | 7.5A | ACC, starting system |
| 18 | STOP | 10A | Vehicle stability control system, power management ECU, shift lock control system, stop lights, multiport fuel injection system/ sequential multiport fuel injection system |
| 19 | (SEAT-HTR) | 15A | No circuit |
Engine Compartment Fuse Box №1
| № | Fuse | A | Circuit |
|---|---|---|---|
| 1 | ALT | 120A | Charging system, RDI, ABS NO.1, ABS NO.2, HTR-B, ACC, CIG, GAUGE, ECU-IG NO.1, HTR-IG, WIPER WASHER, AM1, DOOR NO.1, STOP, DOOR NO.2, OBD, FR FOG, DEF, TAIL, EPS, PTC NO.1, PTC NO.2, PTC NO.3, D/L NO.1, PANEL NO.1 |
| 2 | MAIN | 80A | EFI MAIN, EFI NO.1, HORN, AM2 NO.1, DOME, ECU-B NO.2, TURN&HAZ, H-LP MAIN, H-LP MAIN HI, ECU-B NO.1, D/C CUT, ETCS, IG2, IGN, ALT-S |
Engine Compartment Fuse Box №2
| № | Fuse | A | Circuit |
|---|---|---|---|
| 1 | D/C CUT | 30A | ECU-B NO.1, DOME |
| 2 | IMMOBI | 7.5A | IMMOBI |
| 3 | TURN & HAZ | 10A | Turn signal lights, emergency flashers |
| 4 | ETCS | 10A | Electronic throttle control system |
| 5 | ECU-B NO.2 | 5A | Meter, power windows, air conditioning system |
| 6 | H-LP MAIN | 20A | H-LP RH LO, H-LP LH LO |
| 7 | SPARE | 30A | Spare fuse |
| 8 | SPARE | 20A | Spare fuse |
| 9 | SPARE | 5A | Spare fuse |
| 10 | AM2 NO.1 | 30A | Starting system |
| 11 | H-LP MAIN HI | 25A | H-LP RH HI, H-LP LH HI |
| 12 | DOME | 15A | Interior light, audio system |
| 13 | ECU-B NO.1 | 7.5A | Main body ECU, power door lock system |
| 14 | MIR HTR | 7.5A | Outside rear view mirror defoggers |
| 15 | DEFOGGER | 30A | Rear window defogger |
| 16 | EPS | 50A | Electric power steering |
| 17 | RDI | 30A | RDI FAN |
| 18 | ABS NO.1 | 50A | Vehicle stability control system |
| 19 | HTR-B | 40A | HTR, BLR |
| 20 | ABS NO.2 | 30A | Vehicle stability control system |
| 21 | HORN | 10A | Horn |
| 22 | EFI-MAIN | 20A | Multiport fuel injection system/ sequential multiport fuel injection system, EFI NO.1, Fuel pump |
| 23 | ALT-S | 7.5A | Charging system |
| 24 | IGN | 15A | Injection, igniter |
| 25 | IG2 | 10A | SRS airbag system, meter |
| 26 | EFI NO.1 | 10A | Multiport fuel injection system/ sequential multiport fuel injection system |
Engine Compartment Fuse Box №3
| № | Fuse | A | Circuit |
|---|---|---|---|
| 1 | PTC NO.1 | 50A | PTC heater |
| 2 | PTC NO.3 | 30A | PTC heater |
| 3 | PTC NO.2 | 30A | PTC heater |
| 4 | H-LP RH HI | 10A | Headlight (high beam) |
| 5 | H-LP LH HI | 10A | Headlight (high beam) |
| 6 | H-LP RH LO | 10A | Right-hand headlight (low beam) |
| 7 | H-LP LH LO | 10A | Left-hand headlight (low beam) |
2015
Instrument Panel Fuse Box
| № | Fuse | A | Circuit |
|---|---|---|---|
| 1 | ECU-IG N0.1 | 7.5A | Vehicle stability control system, shift lock control system, electric power steering, automatic headlight system, main body ECU, tire pressure warning system |
| 2 | GAUGE | 10A | Electric cooling fan, charging system, emergency flashers, front passenger’s seat belt reminder light, back-up lights, multiport fuel injection system/sequential multi-port fuel injection system, windshield wiper ECU |
| 3 | HTR-IG | 10A | Air conditioning system, rear window defogger |
| 4 | WASHER RR | 10A | Windshield washer |
| 5 | WIPER RR | 10A | Rear window wiper |
| 6 | WIPER FR | 25A | Windshield wipers |
| 7 | WASHER FR | 10A | Windshield washer |
| 8 | OBD | 7.5A | On-board diagnosis system |
| 9 | DOOR NO.2 | 20A | Power windows |
| 10 | D/L NO.1 | 15A | Power door lock system, main body ECU |
| 11 | DOOR NO.1 | 30A | Power windows |
| 12 | CIG | 15A | Power outlet |
| 13 | ACC | 5A | Outside rear view mirrors, audio system, shift lock control system, main body ECU |
| 14 | PANEL NO.1 | 5A | Meter |
| 15 | TAIL | 10A | Parking lights, tail lights, license plate lights, multiport fuel injection system/sequential multiport fuel injection system, instrument cluster, windshield wiper ECU |
| 16 | (FOG FR) | 15A | No circuit |
| 17 | AM1 | 7.5A | ACC, starting system |
| 18 | STOP | 10A | Vehicle stability control system, power management ECU, shift lock control system, stop lights, multiport fuel injection system/ sequential multiport fuel injection system |
| 19 | (SEAT-HTR) | 15A | No circuit |
Engine Compartment Fuse Box №1
| № | Fuse | A | Circuit |
|---|---|---|---|
| 1 | ALT | 120A | Charging system, RDI, ABS NO.1, ABS NO.2, HTR-B, ACC, CIG, GAUGE, ECU-IG NO.1, HTR-IG, WIPER WASHER, AM1, DOOR NO.1, STOP, DOOR NO.2, OBD, FR FOG, DEF, TAIL, EPS, PTC NO.1, PTC NO.2, PTC NO.3, D/L NO.1, PANEL NO.1 |
| 2 | MAIN | 80A | EFI MAIN, EFI NO.1, HORN, AM2 NO.1, DOME, ECU-B NO.2, TURN&HAZ, H-LP MAIN, H-LP MAIN HI, ECU-B NO.1, D/C CUT, ETCS, IG2, IGN, ALT-S |
Engine Compartment Fuse Box №2
| № | Fuse | A | Circuit |
|---|---|---|---|
| 1 | D/C CUT | 30A | ECU-B NO.1, DOME |
| 2 | IMMOBI | 7.5A | IMMOBI |
| 3 | TURN & HAZ | 10A | Turn signal lights, emergency flashers |
| 4 | ETCS | 10A | Electronic throttle control system |
| 5 | ECU-B NO.2 | 5A | Meter, power windows, air conditioning system |
| 6 | H-LP MAIN | 20A | H-LP RH LO, H-LP LH LO |
| 7 | SPARE | 30A | Spare fuse |
| 8 | SPARE | 20A | Spare fuse |
| 9 | SPARE | 5A | Spare fuse |
| 10 | AM2 NO.1 | 30A | Starting system |
| 11 | H-LP MAIN HI | 25A | H-LP RH HI, H-LP LH HI |
| 12 | DOME | 15A | Interior light, audio system |
| 13 | ECU-B NO.1 | 7.5A | Main body ECU, power door lock system |
| 14 | MIR HTR | 7.5A | Outside rear view mirror defoggers |
| 15 | DEFOGGER | 30A | Rear window defogger |
| 16 | EPS | 50A | Electric power steering |
| 17 | RDI | 30A | RDI FAN |
| 18 | ABS NO.1 | 50A | Vehicle stability control system |
| 19 | HTR-B | 40A | HTR, BLR |
| 20 | ABS NO.2 | 30A | Vehicle stability control system |
| 21 | HORN | 10A | Horn |
| 22 | EFI-MAIN | 20A | Multiport fuel injection system/ sequential multiport fuel injection system, EFI NO.1, Fuel pump |
| 23 | ALT-S | 7.5A | Charging system |
| 24 | IGN | 15A | Injection, igniter |
| 25 | IG2 | 10A | SRS airbag system, meter |
| 26 | EFI NO.1 | 10A | Multiport fuel injection system/ sequential multiport fuel injection system |
Engine Compartment Fuse Box №3
| № | Fuse | A | Circuit |
|---|---|---|---|
| 1 | PTC NO.1 | 50A | PTC heater |
| 2 | PTC NO.3 | 30A | PTC heater |
| 3 | PTC NO.2 | 30A | PTC heater |
| 4 | H-LP RH HI | 10A | Headlight (high beam) |
| 5 | H-LP LH HI | 10A | Headlight (high beam) |
| 6 | H-LP RH LO | 10A | Right-hand headlight (low beam) |
| 7 | H-LP LH LO | 10A | Left-hand headlight (low beam) |